The largest prime (out of 733 = equal to its last three digits and prime ! ) resulting from the ninedigital equation (A-B)^C + (D-E)^F + (G-H)^I, where the letters A to I represent any combination of the nine digits 1 through 9. Note that (3-4)^6 + (7-2)^5 + (8-1)^9 and (4-3)^6 + (7-2)^5 + (8-1)^9 are the only two distinct solutions for 40356733. [De Geest]